javascript - PassportJS/Express 内部出错后如何重定向？

Question

使用 Express 和 NodeJS 配置 Passport 时，如果用户的电子邮件地址无效，我会抛出错误。出现此错误后，我想重定向到失败页面，向他们提供有关如何正确登录的说明。有更好的方法吗？如果没有，我将如何以某种方式捕获错误并重定向到新页面。

passport.use(new GoogleStrategy({
        clientID     : auth.googleAuth.clientID,
        /* Settings redacted for brevity */
    },
    function(token, refreshToken, profile, done) {
        User.findOne(
            {
                "google.id" : profile.id
            },
            function(err, user) {

                if (err) return done(err)

                if (user) return done(null, user)

                else {

                    if (email.indexOf("lsmsa.edu") > -1) {

                        // Code redacted for brevity

                    } else {
                        done(new Error("Invalid email address"))
                    }
                }
            }
        )
    }))

Answer 1

我认为你可以使用这个:

Redirects

A redirect is commonly issued after authenticating a request.

app.post('/login',
  passport.authenticate('local', { successRedirect: '/',
                                   failureRedirect: '/login' }));

In this case, the redirect options override the default behavior. Uponsuccessful authentication, the user will be redirected to the homepage. If authentication fails, the user will be redirected back to thelogin page for another attempt.

或者这个:

Custom Callback

If the built-in options are not sufficient for handling anauthentication request, a custom callback can be provided to allow theapplication to handle success or failure.

app.get('/login', function(req, res, next) {
  passport.authenticate('local', function(err, user, info) {
    if (err) { return next(err); }
    if (!user) { return res.redirect('/login'); }
    req.logIn(user, function(err) {
      if (err) { return next(err); }
      return res.redirect('/users/' + user.username);
    });
  })(req, res, next);
});

请阅读文档: https://www.passportjs.org/concepts/authentication/downloads/html/#middleware